rose church there in newtown connecticut. members of the clergy and members of the community have come together to hold a vigil for the victims of this morning's mass shooting at sandy hook elementary. 20 children were killed, six adults killed as well. the shooter then shot and killed himself. this morning's tragedy unfolded just as the school day was getting started. now we're almost 12 hours into it and still authorities do not have an answer as to what prompted the shooter to open fire. >>> meanwhile here in the bay area students are back on campus at monte vista high school in cuper to the best -- in cupertino after a bomb threat. now matt keller is there to find out how they're dealing with that threat after today's connecticut shooting. >> reporter: many parents told us they're thankful for a fast response to yesterday's bomb threat. everybody looked normal today at monte vista high school. some parents told me they're nervous about their kids safety. >> all this is in the back of our minds but we didn't think it would